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Old 03-03-2012, 02:33 PM   #1
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2001 monaco executive

i am checking out a 2001 monaco executive 40' single slide with a 500 cummings i was woundering what kind of fuel milage i can expect
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Old 03-03-2012, 03:00 PM   #2
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Welcome to the forum and glad you joined us. I'm sure you'll get your question answered as far as your mpg. We have a gas coach and avg 7.5 -8. I'm sure it will come in that range. Enjoy your shopping experience and hope you a coach soon. Be safe and Happy Motoring!!!
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Old 03-03-2012, 03:44 PM   #3
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The Cummins ISM is an outstanding engine for motor home service. MPG is somewhat dependent on driving style, but the engine is capable of 7-8 mpg. I'm a conservative driver and I shoot for a target speed of about 62 on interstate driving. I have just under 90k on my ISM and my accumulative mpg is just under 8. This includes fuel used by the generator and AquaHot. A '01 did not have much EPA hardware so that is also a plus.
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Old 03-03-2012, 07:43 PM   #4
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It takes about 90,000 miles to break in the engine. Good for another 400,000. deSanford
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Old 03-07-2012, 03:23 PM   #5
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Cummins ISM

Alfred,

I'm also looking at coaches with the Cummins ISM. It is a derivative of the 1990’s Cummins M11+ with the newer Cummins Interact System electronic controls added (Interact System is the IS in ISM). The 500hp motor home version produces 1550 ft lbs of peak torque and has a very broad-flat torque curve. What differentiates the ISM from the smaller ISB and ISC is the ISM has 700 ft lbs of torque at idle.

It is a million mile engine and Cummins recommends it for heavy motor homes. The ISM weighs 2268 lbs and has one of the highest outputs per pound for heavy diesel engines. The Cat C12/C13 engines and even the new Cummins ISX 11.9 weigh several hundred pounds more. Manufacturers pair it with the heavier Allison MH4000 transmission.

A friend with an ISM averages 8 mpg and he drives fairly aggressive.
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Old 03-08-2012, 05:29 AM   #6
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i checked out the 2001 monaco executive they didn't take very good care of the coach the inside was treshed what a shame so we you buying a 2001 monaco dynasty it is like brand new inside and out and drives like new too no raddles or wind noise just floats down the road
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Old 03-08-2012, 05:53 AM   #7
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We have a 2000 Monaco Dynasty. Drives like a dream, about 50K miles, about 8 mpg. Quiet, smooth, POWERFUL...still accelerates up hill. We could not be happier.

Enjoy.....
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